Okay, kiddo! So, some people really want everyone to get along and be friends with each other. They believe that fighting and being mean can cause a lot of problems. To show their support for being peaceful, they made a flag called the peace flag.
This flag is usually white, which means "no more fighting." It also has a colorful design in the middle that symbolizes different things, like love, friendship, and happiness. Sometimes, people will wave this flag at events, like rallies or concerts, to show that they want everyone to be peaceful and get along.
It's kind of like when you and your sibling are arguing, but then you say sorry and give each other a hug. That's what the peace flag is all about - saying sorry and making friends instead of fighting.